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在HTML5以前我们如果需要实现文件上传服务器等功能的时候,有时候我们不得不依赖于FLASH去实现,而在HTML5到来之后,我们很容易的实现对文件的上传,只需要利用HTML5的一个FormData属性,结合Jquery就很容易实现文件的上传,而且读取文件的上传进度,下面这个上传案例就是基于上面所说的实现的,下面我将所所有的JS和CSS以及HTML页面代码放在下面。
注意事项:FormData属性必须依赖于HTML5,所以如果你按照本文代码实现的功能,则浏览器必须升级为最新(支持HTML5 FormData属性)。
1 <!DOCTYPE html> 2 3 <html lang="en" xmlns="http://www.w3.org/1999/xhtml"> 4 <head> 5 <meta charset="utf-8" /> 6 <title>使用HTML的FormData属性实现文件上传</title> 7 <link rel="stylesheet" href="../css/fileUpload.css" /> 8 </head> 9 <body> 10 <table id="uploadTable" style="border: 1px;"></table> 11 <br/> 12 <a href="javascript:void(0);" class="input-file"> 13 添加文件<input type="file" id="txtFile" style="width:200px;" /> 14 </a> 15 <script type="text/javascript" src="../js/jquery-1.7.1-min.js"></script> 16 17 <script type="text/javascript"> 18 $(function () { 19 $(‘#uploadTable‘).SalesMOUNDUpload({ 20 saveUrl: ‘/Test/Save‘, 21 jqInput: $(‘#txtFile‘), 22 fnRemove: removeFile, 23 fnComplete: function (d) { 24 window.console.log(‘complete ‘ + d); 25 } 26 }); 27 }); 28 function removeFile(d) { 29 $.post(‘/Test/Remove‘, { "filename": d }, function(r) { 30 31 }); 32 } 33 </script> 34 </body> 35 </html>
1 /*源文件头信息: 2 <copyright file="FileUpload.js"> 3 Copyright(c)2014-2034 Kencery.All rights reserved. 4 个人博客:http://www.cnblogs.com/hanyinglong 5 创建人:韩迎龙(kencery) 6 创建时间:2015-6-24 7 </copyright>*/ 8 9 body 10 { 11 font-family: "微软雅黑"; 12 font-size: 12px; 13 } 14 .input-file { 15 overflow: hidden; 16 position: relative; 17 } 18 .input-file input { 19 opacity: 0; 20 filter: alpha(opacity=0); 21 font-size: 100px; 22 position: absolute; 23 top: 0; 24 right: 0; 25 } 26 #uploadTable { 27 width: 500px; 28 border-collapse: collapse; 29 border: 1px solid Silver; 30 }
1 // 源文件头信息: 2 // <copyright file="FileUpload.js"> 3 // Copyright(c)2014-2034 Kencery.All rights reserved. 4 // 个人博客:http://www.cnblogs.com/hanyinglong 5 // 创建人:韩迎龙(kencery) 6 // 创建时间:2015-6-24 7 // </copyright> 8 9 ; 10 (function($) { 11 $.fn.SalesMOUNDUpload = function(options) { 12 var defaults = 13 { 14 saveUrl: ‘‘, 15 jqInput: ‘‘, 16 maxSize: 1024 * 1024 * 100, //100M 17 fnRemove: ‘‘, //移除文件 ,参数:文件名 18 fnComplete: ‘‘ //每个文件成功 ,参数:服务器端返回内容 19 }; 20 21 var opt = $.extend(defaults, options); 22 23 function getByteToM(val) { 24 if (isNaN(val)) return val; 25 val = val / (1024 * 1024); 26 val = Math.round(val * 100) / 100; 27 return val; 28 } 29 30 return this.each(function() { 31 var $this = $(this); 32 $this.empty(); 33 34 if (typeof FormData == ‘undefine‘) { 35 alert(‘浏览器版本太低,不支持改上传!‘); 36 return; 37 } 38 39 //表头 40 if ($this.find(‘thead‘).length == 0) { 41 var $thead = $(‘<thead>‘); 42 var $th_tr = $(‘<tr>‘); 43 $th_tr.append(‘<th>文件名</th>‘); 44 $th_tr.append(‘<th>类型</th>‘); 45 $th_tr.append(‘<th>大小</th>‘); 46 $th_tr.append(‘<th>状态</th>‘); 47 $th_tr.append(‘<th>操作</th>‘); 48 $th_tr.appendTo($thead); 49 $this.append($thead); 50 } 51 52 opt.jqInput[0].addEventListener(‘change‘, function(e) { 53 var file = this.files[0]; 54 55 if (!file) { 56 return; 57 } 58 if (file.size > opt.maxSize) { 59 window.alert(‘文件超过最大‘); 60 return; 61 } 62 var fd = new FormData(); 63 var $table = $this; 64 65 fd.append("uploadFile", file); 66 var xhr = new XMLHttpRequest(); 67 xhr.open(‘POST‘, opt.saveUrl, true); 68 69 xhr.upload.addEventListener("progress", uploadProgress, false); 70 xhr.addEventListener("load", uploadComplete, false); 71 xhr.addEventListener("error", uploadFailed, false); 72 xhr.addEventListener("abort", uploadCanceled, false); 73 74 //表中内容 75 var $tr = $(‘<tr>‘); 76 $tr.append(‘<td class="upload_name">‘ + file.name + ‘</td>‘); 77 $tr.append(‘<td class="upload_type">‘ + file.type + ‘</td>‘); 78 $tr.append(‘<td class="upload_size">‘ + getByteToM(file.size) + ‘M‘ + ‘</td>‘); 79 $tr.append(‘<td class="upload_status">‘ + 0 + ‘</td>‘); 80 $tr.append(‘<td class="upload_action"><a href="javascript:void(0);">‘ + ‘取消‘ + ‘</a></td>‘); 81 $tr.find(‘.upload_action a‘).unbind(‘click‘).bind(‘click‘, function() { 82 xhr.abort(); 83 }); 84 85 $table.append($tr); 86 87 function uploadProgress(evt) { 88 if (evt.lengthComputable) { 89 var percentComplete = Math.round(evt.loaded * 100 / evt.total); 90 $tr.find(‘.upload_status‘).html(Math.round(percentComplete) + ‘%‘); 91 } else { 92 $tr.find(‘.upload_status‘).html(‘unable to compute‘); 93 } 94 } 95 96 function uploadComplete(evt) { 97 if (evt.target.status == 200) { 98 $tr.find(‘.upload_status‘).html(‘已完成‘); 99 $tr.find(‘.upload_action a‘).html(‘删除‘); 100 if (typeof opt.fnComplete == ‘function‘) { 101 opt.fnComplete(evt.target.response); 102 103 } 104 $tr.find(‘.upload_action‘).unbind(‘click‘).bind(‘click‘, removeFile); 105 } 106 } 107 108 function uploadFailed() { 109 $tr.find(‘.upload_status‘).html(‘<a href="javascript:void(0);">×</a>‘); 110 $tr.find(‘.upload_status a‘).unbind(‘click‘).bind(‘click‘, function() { 111 $tr.remove(); 112 }); 113 $tr.find(‘.upload_action a‘).html(‘重试‘); 114 $tr.find(‘.upload_action a‘).unbind(‘click‘).bind(‘click‘, function() { 115 xhr.send(fd); 116 }); 117 } 118 119 function uploadCanceled() { 120 $tr.remove(); 121 } 122 123 function removeFile() { 124 $tr.remove(); 125 if (typeof opt.fnRemove == ‘function‘) { 126 opt.fnRemove(file.name); 127 } 128 } 129 130 xhr.send(fd); 131 }, false); 132 }); 133 }; 134 }(jQuery));
5.代码查看地址:https://github.com/kencery/Common/tree/master/KenceryCommonMethod/%E6%96%87%E4%BB%B6%E4%B8%8A%E4%BC%A0
利用Jquery使用HTML5的FormData属性实现对文件的上传
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原文地址:http://www.cnblogs.com/hanyinglong/p/4597525.html